Ain Shams Dental Journal最新文献_第2页

Comparison of the Shaping Ability and Cutting Efficiency of Three Different Rotary Nickel-Titanium Systems. (An In Vitro Study) 三种不同旋转式镍钛系统的成型能力和切割效率比较。(体外研究）

Ain Shams Dental Journal Pub Date : 2024-06-01 DOI: 10.21608/asdj.2024.277571.1238

Safinaz Othman Ahmed, Sarah Fahmy, Medhat Taha El faramawy

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Debris extrusion during retreatment using continuous rotation motion of canal obturated with gutta-percha and bioceramic sealer using three different obturation techniques (an in vitro study) 使用三种不同的封堵技术，通过连续旋转运动对使用水门汀和生物陶瓷封堵剂封堵的管路进行再处理时的碎屑挤出（体外研究）

Ain Shams Dental Journal Pub Date : 2024-06-01 DOI: 10.21608/asdj.2024.282497.1246

Sara Wael Nour, Abeer A elhakim Elgendy, A. Bayoumi

{"title":"Debris extrusion during retreatment using continuous rotation motion of canal obturated with gutta-percha and bioceramic sealer using three different obturation techniques (an in vitro study)","authors":"Sara Wael Nour, Abeer A elhakim Elgendy, A. Bayoumi","doi":"10.21608/asdj.2024.282497.1246","DOIUrl":"https://doi.org/10.21608/asdj.2024.282497.1246","url":null,"abstract":"Aim: To evaluate the debris extrusion during retreatment using continuous rotation motion of canal obturated with gutta-percha and bioceramic sealer using three different obturation techniques. Materials and methods: A total of forty-two extracted mandibular premolar single canals were used in this study. All teeth were divided into three groups according to obturation techniques (n=14 each); Group (A) using single cone technique (SCT), Group (B) using warm vertical compaction technique (WVC), and Group (C) using lateral condensation technique (CLC). During Retreatment, gutta-percha was removed using ProTaper Universal system retreatment files in continuous rotation motion. Debris extrusion during root canal filling removal was assessed using the microbalance. Results: The highest mean weight of apical Debris extrusion was recorded with WVC technique followed by CLC while the least debris extrusion was recorded in SCT obturation technique. There was a statistically significant difference between group WVC and the other two groups, while there was no significant difference between group SCT and group CLC Conclusion: Retreatment of canal obturated using single cone obturation technique and Bioceramics sealer extruded minimal amount of debris.","PeriodicalId":104867,"journal":{"name":"Ain Shams Dental Journal","volume":"1 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141396633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Carbonated Beverages on Salivary pH and Dental Caries in a Sample of Egyptian Children “A cross-sectional study” 一项横断面研究：碳酸饮料对埃及儿童唾液 pH 值和龋齿的影响

Ain Shams Dental Journal Pub Date : 2024-06-01 DOI: 10.21608/asdj.2024.286912.1271

Basma Gamal, Dina Hamdy

{"title":"Effect of Carbonated Beverages on Salivary pH and Dental Caries in a Sample of Egyptian Children “A cross-sectional study”","authors":"Basma Gamal, Dina Hamdy","doi":"10.21608/asdj.2024.286912.1271","DOIUrl":"https://doi.org/10.21608/asdj.2024.286912.1271","url":null,"abstract":"Aim: Investigation of the correlation between the intake of carbonated beverages, salivary pH and dental caries. Materials and methods: One hundred and thirty-nine Egyptian children aged 4-6 years were selected for this study. A questionnaire was designed and validated in Arabic language to collect information from subjects about frequency of intake of carbonated beverages including packed fruit juices, and sweetened milk. Caries occurrence was further assessed by dmf index. Salivary pH was tested for each child. Statistical analysis was carried out using One-Sample Kolmogrovo-smirnov. For parametric distribution, Pearson Correlations was used. For nonparametric distribution, Spearman's Correlations was used. Results: A weak correlation was detected between the frequency of drinking carbonated beverages and salivary pH (r=0.023). A weak correlation between the frequency of drinking carbonated beverages and dmf index (r= 0.024). A non-significant correlation (r=0.127) was also found between the dmf index and salivary pH of the selected children. Conclusion: Excessive drinking of carbonated beverages and salivary pH were not of a direct influence on the increase of caries occurrence among selected children.","PeriodicalId":104867,"journal":{"name":"Ain Shams Dental Journal","volume":"22 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141398172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterization and Potential of Enhancing Bone Regeneration Using Raw Cuttlebone Aragonite Nanoparticles: In Vitro and In Vivo Studies. 利用生海螵蛸文石纳米颗粒促进骨再生的特性和潜力：体外和体内研究。

Ain Shams Dental Journal Pub Date : 2024-06-01 DOI: 10.21608/asdj.2024.283124.1249

Huda A. Elgendi, Amal Ezzat, Nihal Elkazzaz

{"title":"Characterization and Potential of Enhancing Bone Regeneration Using Raw Cuttlebone Aragonite Nanoparticles: In Vitro and In Vivo Studies.","authors":"Huda A. Elgendi, Amal Ezzat, Nihal Elkazzaz","doi":"10.21608/asdj.2024.283124.1249","DOIUrl":"https://doi.org/10.21608/asdj.2024.283124.1249","url":null,"abstract":"Aim: This study aimed to examine the cuttlebone nanoparticles prepared by ball-milling top-down approach without any thermal treatments or chemical additives to investigate its constituents, chemical composition, surface topography, cytotoxicity, and its effect on osteoblasts alkaline phosphatase assay. Also, its effect on alveolar bone of ovariectomized rats was histologically evaluated. Materials and methods: Cuttlebone nanoparticles were characterized by transmission and scanning electron microscopy. Both the elemental composition and its main compositional materials were measured using energy-dispersive X-ray and X-ray diffraction analyses, respectively. Moreover, we evaluated its cytotoxicity in dental pulp cells and examined its osteogenic effect on an osteoblast cell line for alkaline phosphatase activity. Histological examination was performed using a light microscope to investigate its effect on the ovariectomized alveolar bone of rats. Results: The results revealed a nontoxic effect and a direct proportional relationship between the alkaline phosphatase absorption and cuttlebone concentration. Electron microscopy revealed a different regular spherical pattern. Elemental microanalysis detected high calcium and carbon levels, which was confirmed by X-ray diffraction and showed a high calcium carbonate composition. Histologically, normal alveolar bone architecture was noted after using cuttlebone nanoparticles in the ovariectomized group compared with the ovariectomized group only. Conclusion: Raw cuttlebone nanoparticles can be used as biocompatible bone substitutes in bone regeneration.","PeriodicalId":104867,"journal":{"name":"Ain Shams Dental Journal","volume":"33 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141410711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ASDJ Preface ASDJ 前言

Ain Shams Dental Journal Pub Date : 2023-09-01 DOI: 10.21608/asdj.2023.322858

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A comparison of two different management techniques for extensive molar defects in patients suffering from Molar Incisor Hypomineralization (MIH) (A Randomized Clinical Trial) 磨牙切牙低矿化(MIH)患者大面积磨牙缺损两种不同处理方法的比较(一项随机临床试验)

Ain Shams Dental Journal Pub Date : 2023-09-01 DOI: 10.21608/asdj.2022.78983.1049

Hagar Mohie, Mohamed Radwan, Amr Abd El-Aziz

{"title":"A comparison of two different management techniques for extensive molar defects in patients suffering from Molar Incisor Hypomineralization (MIH) (A Randomized Clinical Trial)","authors":"Hagar Mohie, Mohamed Radwan, Amr Abd El-Aziz","doi":"10.21608/asdj.2022.78983.1049","DOIUrl":"https://doi.org/10.21608/asdj.2022.78983.1049","url":null,"abstract":"Background : The molar incisor hypomineralization (MIH) is a developmental enamel defect which affects the first permanent molar and commonly the permanent incisors, the defect can make the patient face a lot of difficulties like sensitivity, rapid caries progression and poor esthetics. Aim: To Compare two different techniques of management of first permanent molar defects in MIH patients regarding the longevity of the crowns, gingival health, marginal integrity and recurrent caries for nine months. The two techniques are two types of crowns (CAD-CAM milled PMMA versus Cast adhesive Metal Coping (CAC)). Materials and Methods: 60 molars were selected and randomly allocated into two groups.one received CAD-CAM milled PMMA crown and the second received CAC. The crowns were evaluated for longevity, marginal integrity, recurrent caries and gingival health at 1, 3, 6 and 9 months. Results: The study showed a highly significant difference between the two groups regarding the longevity in both 1st and 6th months follow ups and no significant differences between the two groups regarding marginal integrity, recurrent caries and gingival health on all follow up visits. Conclusion: Cast adhesive metal coping can be used as a restoration for first permanent molars affected by MIH and despite the esthetic advantage of the PMMA CAD-CAM milled crown and its excellent marginal fit, it needs more research to increase the retention.","PeriodicalId":104867,"journal":{"name":"Ain Shams Dental Journal","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135737591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficiency of Newly Introduced Root Canal Irrigants Based on Nano Particles (In Vitro Study) 纳米颗粒根管冲洗剂的体外研究

Ain Shams Dental Journal Pub Date : 2023-09-01 DOI: 10.21608/asdj.2022.128989.1115

Engy Abd Allah, mohamed mokhtar

{"title":"Efficiency of Newly Introduced Root Canal Irrigants Based on Nano Particles (In Vitro Study)","authors":"Engy Abd Allah, mohamed mokhtar","doi":"10.21608/asdj.2022.128989.1115","DOIUrl":"https://doi.org/10.21608/asdj.2022.128989.1115","url":null,"abstract":"Aim of the study: This study aims to test the efficacy of newly introduced nano particles irrigations along with the golden standard irrigation regarding their antibacterial effect and the altering of dentin composition within the root canal dentin. Materials and methods: A total of sixty-five single rooted human teeth were collected after being freshly extracted. Each tooth was accessed and prepared using one shape rotary files and then manual step back technique was performed at the apical portion to a size of 50#. The teeth were then divided into: antibacterial test group (45 teeth) and dentin composition test group (20 teeth). Results: Regarding the antibacterial effect, among the study groups: Chitosan (nano particles) recorded the highest mean value followed by Silver (nano particles) the least mean value was recorded in sodium hypochlorite with no significant difference between these 3 groups. Regarding the dentin composition effect: Sodium hypochlorite showed the high mean calcium weight at middle and apical root levels followed by silver nano particles and chitosan nano particles. Sodium hypochlorite showed the highest mean phosphorous weight at middle and apical root levels followed by silver nano particles and chitosan nano particles. The calcium to phosphorous ratio among root levels apical and middle showed no significant difference among the study groups; But they all exhibited a higher Ca:P ratio to the control group which was statistically significant. Conclusion : Silver Nano particles irrigation and Chitosan Nano particles irrigation showed lower antibacterial effects against E. faecalis biofilm than sodium hypochlorite irrigation. Similar effect on dentin composition was noticed among the three irrigants used silver Nano particles irrigation, Chitosan Nano particles irrigation and Sodium Hypochlorite irrigation. Chitosan Nano Particles irrigation and silver Nano particles irrigation showed no advantage to Sodium hypochlorite regarding; antibacterial effect nor the effect on dentin composition.","PeriodicalId":104867,"journal":{"name":"Ain Shams Dental Journal","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135737593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Two Different Treatment Modalities on Prei-implant Bone Height of Implant Supported Mandibular Overdenture 两种不同处理方式对种植支撑下颌覆盖义齿种植前骨高度的影响

Ain Shams Dental Journal Pub Date : 2023-09-01 DOI: 10.21608/asdj.2023.160804.1144

Mohamed Elhadarey, Ahmed Osama, Shimaa Ouda

{"title":"Effect of Two Different Treatment Modalities on Prei-implant Bone Height of Implant Supported Mandibular Overdenture","authors":"Mohamed Elhadarey, Ahmed Osama, Shimaa Ouda","doi":"10.21608/asdj.2023.160804.1144","DOIUrl":"https://doi.org/10.21608/asdj.2023.160804.1144","url":null,"abstract":"Aim: This study was carried out to evaluate radiographically the effect of different treatment modalities (All on 4 Concept or 4 implant in interforaminal region) on prei-implant bone height changes of implant supported mandibular overdenture using CBCT. Material and methods: Fourteen completely edentulous patients were selected according to the inclusion and exclusion criteria and divided randomly into 2 groups. Group 1: seven completely edentulous patients were rehabilitated with upper complete denture and lower implant supported hybrid prosthesis using All on 4 concept and group 2 seven completely edentulous patients were rehabilitated with upper complete denture and lower implant supported hybrid prosthesis using four straight implants in anterior intra foraminal region. Bone height changes were evaluated at 0, 6, 12 months after insertion of prosthesis. All data was collected, tabulated & statistically analyzed. Results: The results of this study showed more marginal bone loss around tilted implants in All on 4 concept than straight posterior implants in the second group. Conclusion: Tilted posterior implants in All on 4 concept induce more bone resorption than straight posterior one.","PeriodicalId":104867,"journal":{"name":"Ain Shams Dental Journal","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135782004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

effect of Preparation Design effect on Emax Occlusal Veneers fracture resistance 制剂设计效应对Emax牙合贴面抗折性的影响

Ain Shams Dental Journal Pub Date : 2023-09-01 DOI: 10.21608/asdj.2022.103482.1081

Esraa Abd Elmonem, ahmed abo el fadl, amina hamdy

引用次数: 0

Repair Bond Strength and Surface Characteristics of Two Ceramic Materials Subjected to Different Laser Surface Treatment Combinations.-An in vitro study 两种陶瓷材料在不同激光表面处理组合下的修复粘结强度和表面特性-一项体外研究

Ain Shams Dental Journal Pub Date : 2023-09-01 DOI: 10.21608/asdj.2023.161449.1140

zahraa alhajaj, Tarek Morsi, Doaa Taha

{"title":"Repair Bond Strength and Surface Characteristics of Two Ceramic Materials Subjected to Different Laser Surface Treatment Combinations.-An in vitro study","authors":"zahraa alhajaj, Tarek Morsi, Doaa Taha","doi":"10.21608/asdj.2023.161449.1140","DOIUrl":"https://doi.org/10.21608/asdj.2023.161449.1140","url":null,"abstract":"Background: (CAD/CAM) ceramic restorations has been widely used in the field of fixed prosthodontic dentistry. CAD/CAM ceramics blocks were reported of having less internal porosity; hence the fracture failure occur at a lower rate than conventional layered ceramics. fracture does not frequently result in restoration failure, but it does cause aesthetic and masticatory problems for the patient. Restorations can be replaced or repaired in situations. Micromechanical and chemical methods of retention can be used to repair ceramic-composite surfaces in order to achieve a solid bond. Materials and Methods: 70 specimens of two different materials were divided into groups: (Group A) Vita supernity and (Group B) Vita Enamic were used in this in vitro study. 35 specimens with (14x12x3) were made using a slow speed cutting machine from each material. Each group will then be subdivided into five subgroups according to the surface treatment techniques into Subgroup (1): hydrofluoric acid, Subgroup 2 Er:YAG, Subgroup (3) Er,Cr:YSGG, Subgroup (4) EY+ air abrasion Subgroup 5 ECY+air abrasion. According to the manufacturer’s recommendation, group B was subjected to crystallization.Each group (n=7) received a surface treatment, SEM were measured then silane coupling agent , bonding aget, composite were applied .lastly thermocycling then shear bond strength was measured. Results: measurements showed higher shear bond strength in Hf acid surface treatment showed in both Vita Suprnity and Vita Enamic. Conclusion: Surface treatment affected the shear bond strength of Vita Suprnity and Vita Enamic. HF achieved the highest in Vita Suprnity and in Vita Enamic.","PeriodicalId":104867,"journal":{"name":"Ain Shams Dental Journal","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135783139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0